Approver Comments:
Agreed! No worries; we're just pretty cautious about typographic errors on this end (but I hope that also tells you something about trusting numbers you find in your search, since people who enter numbers into databases make mistakes like that, too). Go ahead and write his name in the "name" field, and I'll be able to confirm this stage.
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I agree that you have found the Berek Lewin who signed the album; as you suggest, being born in 1929, he would have been 12 years old when he signed the album, an appropriate age for school #5.